For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningRear Compartment Lid Weatherstrip Replacement
Rear Compartment Lid Weatherstrip
Procedure
Start at the upper corner of the rear compartment opening and pull the
weatherstrip away from the rear
compartment opening flange.
Position the weatherstrip in the upper corner of the r 2. ear
compartment opening.
Working downward alon ...
USB
Playing from a USB
A USB mass storage or Certified Windows Vista®/Media Transfer Protocol (MTP)
device can be connected to the USB port.
The USB port is in the center console.
The USB icon displays when the USB device is connected.
USB Media Formats
The USB port will support the following med ...
Reporting Safety Defects to the United States Government
If you believe that your vehicle has a defect which could cause a crash or could
cause injury or death, you should immediately inform the National Highway Traffic
Safety Administration (NHTSA) in addition to notifying General Motors.
If NHTSA receives similar complaints, it may open an investig ...